Low-pressure heating system.



V v BATENTE'J E, 20, 1996.

HRRSN.

LOW PRESSURE HEATNG SYSTEM. APPLICATION FILED ma. 25. 1904.

AENTEB EB. 20, 1906.

A. HARRISON. LOW PRESSURE HEA'ENG SYS TEM.

vAPPLIUATION FILED AUG7 25,1804.

2 SHEETS-SERT 2.

O O O O O O O 0 OOOOOOOO OOOOOOOO OOOOOOOOOO To'otZZ whom, t 'mayconcern.-

stance.

' number of radiators may be employed and that either the single-pipe or'tivpipe systems may be employed, as desired.

Attached to the main'2 inanyI preferred out the necessity of a punligvis a' diagrammatic elevation o tem embodying my invention, certainparts Vtional view showing a detail of connecting certain radiators.

innrnjn ernten.

All/IOS HARRISUN, 0F CHICAGO, ILLINUIS, ASSlGNOR OF OE-FUURTH '70 ROBERTH. WALUH, OFv CHICAGO, ILLINOIS. l

I @llllmll-'KESSMHE HEATENQ: SYSTEM..

No. 812,925. Specification of Application iiled Augu Beit known that I,AMos HARRISON, a citizen of the United States of America, residing atChicago, in the county of Cook and State of Illinois, have inventedcertain new and useful Improvements in Low-Pressure Heating Systems, ofwhich the following is a descrip: tion.

My invention relates to a system of heating apparatus wherein theheating medium con sists of a suitable vapor under low and prefF erably,a proximately atmospheric pressure.

The o ject of my improvement Ais to provide substantially automaticmeans for circulating such a medium at low pressure withor fan except atpossibly infrequent perio in starting the operation.

To this end my invention consists in the novel construction,arrangement, and combination of parts herein shown and described, andmore particularly pointed out in the claims.

'In the accompanying like or corresponding re e dicate like orcorresponding drawings, wherein rence characters inparts, Figure 1 vaheating sysbeing in section to more clearly show the construction. Fig.2 is an enlarged sectionall View. showing a part of the construction ofthe pressure-reducing means. Fig. 3 is a secarts. Fig. 4 is a verticalsection of the pre erred generator. Fig. 5 is a trans' verse section online 5 5 of Fig. Lt, and Fig. 6

isa diagrammaticview showing a modified arrangement ci m device.

' In the preferre forni shown in the drawings, 1 is a`generator of anysuitable construction connected by a main 2 to suitable As shown in Fig.6, the radiator 3 is connected by what is known as asinglepipef system,while in Fig. 1 the connection: with the radiator .4 indicates thetwo-pipe sysf tem. The two methods are shown to indicate the referredconnection in each in'-I t is of course obvious' that any Letten raient.Patented Feb. 2o, 190e.

st 25,1904. Serial Nn.222,197.

' manner is an automatic pressure-reducer comprising a casing 5,suitably connected at one end to the main; as at 6, and closed at itsopposite end upon a centrally-contained tube or pipe 7. Oneend of thetube'7 forms a connection 'With,,an extension 10, preferably passingtransversely ythrough the main 2,-as shown. Thus while the medium maycirculate freely about the tube it'is prevented.

from passing into it. By this means the tubel is heated and the passingvpartially cooled vapor therein is increased in temperature above thatwhich is conducted thereto. trom the radiators.

ssv

That part of the tube 7 extendin outside the casing 5 is preferablyextende a' short distance above the roof ofv tlie `building ,in

which the apparatus is located, so that any air,l gas, or vapor withinthe tube may be freely discharged into the atmosphere.y In order toassist this action, I prefer to place upon `the projecting end of thetube an eject-v ing-cowl 8, provided with a suitable vane 9, the twobeing rotatably mounted to secure the most favorable action ofthe wind.In the preferred form shown the pipe 10 forms an extension orcontinuation of the tube 7 and is provided with a suitable trap or seal12 and connected with a pipe 11, arranged to return any Huid arisingfrom condensation in the s'ystem to the generator.

In'order to communicate thepartial vacuum or reducedpressure Within thetube 7l and associated parts to' the radiators and various parte oi'thesystem to cause the vapor to flow therein, I connect the radiators by asuitable pipe or pipes 14 to the tube 7 or extensions thereof above thehighest point to which liquid' therein will rise. .If desired, automatic"air-valves 15, operated by the temperature in the usual manner, may belocated at suitable points in the system to regulate the flow of Vaporin the pipes and *preventwaste v. 'I I prefer to provide a trap llineachpipe, 11 near `the generator and in 'other parts of the system Wherefluid is likely to accumulate, and provide the same With drip-cocks 17,sothat the system may be drained when' A pipeflSiis provided with avalve 19 and arranged' 'to conduct'the liquid to be vapo- IOO emergencyor in starting the operation.

Any preferred form of generator suitable for the purpose may beemployed. Satisfacy system an( tory results may be secured by means ofthe generator shown in Figs. 5 and 6, made the subject-matter of aseparate application for Letters Patent duly filed August 1, 1904,Serial No. 219,007.

As shown', the shell 22 is provided with one or moretransversely-arranged porous beds 23 of incombustible material, whichare raised to high temperature by a burner 24, ada ted for use with gas,oil, or the like. The Hui is introduced by a pipe or pipes 11 andydistributed by a foraminated annular trough 25 or, if preferred, by a.spraying-nozzle 26. (Shown in dotted lines.) The v `por generated isintimatelyinixed with tiic products of combustion from the burner, andthe mixture thus formed` is passed intothe system by means of the pipe27, connecting with the dome 28': The burner may be open to theatmosphere by means of a suitable opening 29 or other preferred means'.l

Obviously the highest economy is secured, inasmuch as the products ofcombustion, as wel] as the Generated Vapor, pass through the y give uptheir heat in their passage through the system, vas described.

Having thus described my improvement, it is obvious various immaterialmodifications inay be made without departing from the spirit of myinvention. Ileiiee 1 do not wish to be understood as limiting myself tothe exact form and cpiistructioii shown.

What .l claim as new, and desire to secure by Letters Patent, is-

l. A device of the kind described, coinpri'sing radiators,conducting-pipes, and a generator for producing a heating medium, incoml'iination with an automatic pressurereducer and discharge-pipe,consisting of a tube open at one end, means for heating said tube bysaid heating'inedium, and means connectingvarious )arts of the system tothe other end of said tube to induce a low 'of the heatingA medium tothose parts.

2, A device oi the kind'described, comprising ri'rdiators, conductingpipes, and 4a generator'lor producing a heating medium, in combinationwith an automatic pressurereducer and discharge-pipe consisting ol asubstantially vertical tube open :it its upper end to the atmospheremeans vtor heating said vertical --tube by means of' said heating mediumand induction-pipes connecting the lower end of said vertical tube withvarious parts of the system to induce a flow of the heating medium tothose parts.

3. A device of the kind described, coinprising radiators,conducting-pipes, and a generator for producingr a heating,r medium, incombination with an automatic pressurereducer and discharge-mpcconsisting of a substantially vertical tube open at its upper endpositioned partly' within a casing connected to said conducting-pipes,whereby said vertical tube is heated by said heating medium, andinduction-pipes connecting the lower end of said vertical tube withvarious parts of the system. to induce a How of the heating medium tothose parts.

4. A device of the kind described, comprisingradiators,conducting-pipes, and a generator for producing a heatingmedium,-

in combination with an automatic pressurereducer and discharge-pipeconsisting of a substantially vertical tube open at its upperend andprovided with a suitable ejectorcowl, means for heating said verticaltube by means of said heating medium and means connecting various partsof the-system to the lower part of said vertical tube to induce a flowof the heating medium to those parts.

5.` A device of the kind described, coinprising radiators,conducting-pipes, and a generator for producingr a heating medium, incombination with an automatic pressurereducer and discharge-pipeconsisting'ot a substantially vertical tub'e open at its upper end andprovided with a suitable ejectorcowl,y means i'or heating said verticaltube by means oi'` said heating medium, and induction-pipes connectingthe .lower end oi' said vertical tube with various parts of the systemto induce a [low of the heating medium to'those iarts. 6'. A device ofthe kind described, coinprising radiators, conducting-pipes, andcentrolling nieans and a generator for producingr a heating medium, incombination with an automatic pressure-reducer consisting of asubstantially vertical tube open at its upper end and provided with asuitable ejector- IOO cowl, said vertical tube being position-ed partlywithin a casing connected to said conducting-pipes, whereby saidvertical tube is heated by said heating medium, and induction-pipesconnecting the' lower end said vertical tube with various parts of thesystem to induce a flow of the heating medium to those parts. i

7. An automatic pressure-reducer, com,-Q

prising a tube adapted to be placed in a substantially vert-icalposition, an air-tight casing inclosing a part of the length of saidtube, means for connecting said casing to a conducting- )ipe whereby aheating mediaan is admitted to said casing to heat said tu/beandmeans'forvcnneeting nducten-ppes to' the' lower end of said tube.

v 8. An automatic pfessure reducer, comprlsng su tube adapted to beplaced in a substantially vertical position provided with any1ejectoreo'wl at its 'upper end,i`sl easing inelosingl L pait'o'f thelength 0l? seid tube, means fr'eonneeting said cusingfto a; conducting-z'.ppe, whereby e, heating mediums admitted f 1o ,to seid caeihg to heatll'slaidtube, end mean's Y Mee HARMSQH. Wltnessesnu l J BURTON-U. Hmgsg,vvCIHARms Cese(

